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|
| <h1>Module fx Methods</h1> |
| <p class="navigation-index">[<a href="#AddNoiseImage">AddNoiseImage</a> • <a href="#BlueShiftImage">BlueShiftImage</a> • <a href="#CharcoalImage">CharcoalImage</a> • <a href="#ColorizeImage">ColorizeImage</a> • <a href="#ColorMatrixImage">ColorMatrixImage</a> • <a href="#FxImage">FxImage</a> • <a href="#ImplodeImage">ImplodeImage</a> • <a href="#The MorphImages">The MorphImages</a> • <a href="#PlasmaImage">PlasmaImage</a> • <a href="#PolaroidImage">PolaroidImage</a> • <a href="#MagickSepiaToneImage">MagickSepiaToneImage</a> • <a href="#ShadowImage">ShadowImage</a> • <a href="#SketchImage">SketchImage</a> • <a href="#SolarizeImage">SolarizeImage</a> • <a href="#SteganoImage">SteganoImage</a> • <a href="#StereoAnaglyphImage">StereoAnaglyphImage</a> • <a href="#SwirlImage">SwirlImage</a> • <a href="#TintImage">TintImage</a> • <a href="#VignetteImage">VignetteImage</a> • <a href="#WaveImage">WaveImage</a>]</p> |
| |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="AddNoiseImage">AddNoiseImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>AddNoiseImage() adds random noise to the image.</p> |
| |
| <p>The format of the AddNoiseImage method is:</p> |
| |
| <pre class="code"> |
| Image *AddNoiseImage(const Image *image,const NoiseType noise_type, |
| ExceptionInfo *exception) |
| Image *AddNoiseImageChannel(const Image *image,const ChannelType channel, |
| const NoiseType noise_type,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>channel</h5> |
| <p>the channel type.</p> |
| |
| <h5>noise_type</h5> |
| <p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="BlueShiftImage">BlueShiftImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p> |
| |
| <p>The format of the BlueShiftImage method is:</p> |
| |
| <pre class="code"> |
| Image *BlueShiftImage(const Image *image,const double factor, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>factor</h5> |
| <p>the shift factor.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="CharcoalImage">CharcoalImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>CharcoalImage() creates a new image that is a copy of an existing one with the edge highlighted. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p> |
| |
| <p>The format of the CharcoalImage method is:</p> |
| |
| <pre class="code"> |
| Image *CharcoalImage(const Image *image,const double radius, |
| const double sigma,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>radius</h5> |
| <p>the radius of the pixel neighborhood.</p> |
| |
| <h5>sigma</h5> |
| <p>the standard deviation of the Gaussian, in pixels.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ColorizeImage">ColorizeImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>ColorizeImage() blends the fill color with each pixel in the image. A percentage blend is specified with opacity. Control the application of different color components by specifying a different percentage for each component (e.g. 90/100/10 is 90 red, 100 green, and 10 blue).</p> |
| |
| <p>The format of the ColorizeImage method is:</p> |
| |
| <pre class="code"> |
| Image *ColorizeImage(const Image *image,const char *opacity, |
| const PixelPacket colorize,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>opacity</h5> |
| <p>A character string indicating the level of opacity as a percentage.</p> |
| |
| <h5>colorize</h5> |
| <p>A color value.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ColorMatrixImage">ColorMatrixImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>ColorMatrixImage() applies color transformation to an image. This method permits saturation changes, hue rotation, luminance to alpha, and various other effects. Although variable-sized transformation matrices can be used, typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA (or RGBA with offsets). The matrix is similar to those used by Adobe Flash except offsets are in column 6 rather than 5 (in support of CMYKA images) and offsets are normalized (divide Flash offset by 255).</p> |
| |
| <p>The format of the ColorMatrixImage method is:</p> |
| |
| <pre class="code"> |
| Image *ColorMatrixImage(const Image *image, |
| const KernelInfo *color_matrix,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>color_matrix</h5> |
| <p>the color matrix.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="FxImage">FxImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>FxImage() applies a mathematical expression to the specified image.</p> |
| |
| <p>The format of the FxImage method is:</p> |
| |
| <pre class="code"> |
| Image *FxImage(const Image *image,const char *expression, |
| ExceptionInfo *exception) |
| Image *FxImageChannel(const Image *image,const ChannelType channel, |
| const char *expression,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>channel</h5> |
| <p>the channel.</p> |
| |
| <h5>expression</h5> |
| <p>A mathematical expression.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ImplodeImage">ImplodeImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>ImplodeImage() creates a new image that is a copy of an existing one with the image pixels "implode" by the specified percentage. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p> |
| |
| <p>The format of the ImplodeImage method is:</p> |
| |
| <pre class="code"> |
| Image *ImplodeImage(const Image *image,const double amount, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>implode_image</h5> |
| <p>Method ImplodeImage returns a pointer to the image after it is implode. A null image is returned if there is a memory shortage.</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>amount</h5> |
| <p>Define the extent of the implosion.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="The_MorphImages">The MorphImages</a></h2> |
| <div class="doc-section"> |
| |
| <p>The MorphImages() method requires a minimum of two images. The first image is transformed into the second by a number of intervening images as specified by frames.</p> |
| |
| <p>The format of the MorphImage method is:</p> |
| |
| <pre class="code"> |
| Image *MorphImages(const Image *image,const size_t number_frames, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>number_frames</h5> |
| <p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="PlasmaImage">PlasmaImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>PlasmaImage() initializes an image with plasma fractal values. The image must be initialized with a base color and the random number generator seeded before this method is called.</p> |
| |
| <p>The format of the PlasmaImage method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment, |
| size_t attenuate,size_t depth) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>segment</h5> |
| <p> Define the region to apply plasma fractals values.</p> |
| |
| <h5>attenuate</h5> |
| <p>Define the plasma attenuation factor.</p> |
| |
| <h5>depth</h5> |
| <p>Limit the plasma recursion depth.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="PolaroidImage">PolaroidImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>PolaroidImage() simulates a Polaroid picture.</p> |
| |
| <p>The format of the AnnotateImage method is:</p> |
| |
| <pre class="code"> |
| Image *PolaroidImage(const Image *image,const DrawInfo *draw_info, |
| const double angle,ExceptionInfo exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>draw_info</h5> |
| <p>the draw info.</p> |
| |
| <h5>angle</h5> |
| <p>Apply the effect along this angle.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="MagickSepiaToneImage">MagickSepiaToneImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>MagickSepiaToneImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by sepia toning. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the sepia toning. A threshold of 80 is a good starting point for a reasonable tone.</p> |
| |
| <p>The format of the SepiaToneImage method is:</p> |
| |
| <pre class="code"> |
| Image *SepiaToneImage(const Image *image,const double threshold, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>threshold</h5> |
| <p>the tone threshold.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="ShadowImage">ShadowImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>ShadowImage() simulates a shadow from the specified image and returns it.</p> |
| |
| <p>The format of the ShadowImage method is:</p> |
| |
| <pre class="code"> |
| Image *ShadowImage(const Image *image,const double opacity, |
| const double sigma,const ssize_t x_offset,const ssize_t y_offset, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>opacity</h5> |
| <p>percentage transparency.</p> |
| |
| <h5>sigma</h5> |
| <p>the standard deviation of the Gaussian, in pixels.</p> |
| |
| <h5>x_offset</h5> |
| <p>the shadow x-offset.</p> |
| |
| <h5>y_offset</h5> |
| <p>the shadow y-offset.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SketchImage">SketchImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>SketchImage() simulates a pencil sketch. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and SketchImage() selects a suitable radius for you. Angle gives the angle of the sketch.</p> |
| |
| <p>The format of the SketchImage method is:</p> |
| |
| <pre class="code"> |
| Image *SketchImage(const Image *image,const double radius, |
| const double sigma,const double angle,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>radius</h5> |
| <p>the radius of the Gaussian, in pixels, not counting the center pixel.</p> |
| |
| <h5>sigma</h5> |
| <p>the standard deviation of the Gaussian, in pixels.</p> |
| |
| <h5>angle</h5> |
| <p>Apply the effect along this angle.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SolarizeImage">SolarizeImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>SolarizeImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by selectively exposing areas of photo sensitive paper to light. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the solarization.</p> |
| |
| <p>The format of the SolarizeImage method is:</p> |
| |
| <pre class="code"> |
| MagickBooleanType SolarizeImage(Image *image,const double threshold) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>threshold</h5> |
| <p>Define the extent of the solarization.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SteganoImage">SteganoImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>SteganoImage() hides a digital watermark within the image. Recover the hidden watermark later to prove that the authenticity of an image. Offset defines the start position within the image to hide the watermark.</p> |
| |
| <p>The format of the SteganoImage method is:</p> |
| |
| <pre class="code"> |
| Image *SteganoImage(const Image *image,Image *watermark, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>watermark</h5> |
| <p>the watermark image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="StereoAnaglyphImage">StereoAnaglyphImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>StereoAnaglyphImage() combines two images and produces a single image that is the composite of a left and right image of a stereo pair. Special red-green stereo glasses are required to view this effect.</p> |
| |
| <p>The format of the StereoAnaglyphImage method is:</p> |
| |
| <pre class="code"> |
| Image *StereoImage(const Image *left_image,const Image *right_image, |
| ExceptionInfo *exception) |
| Image *StereoAnaglyphImage(const Image *left_image, |
| const Image *right_image,const ssize_t x_offset,const ssize_t y_offset, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>left_image</h5> |
| <p>the left image.</p> |
| |
| <h5>right_image</h5> |
| <p>the right image.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| <h5>x_offset</h5> |
| <p>amount, in pixels, by which the left image is offset to the right of the right image.</p> |
| |
| <h5>y_offset</h5> |
| <p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p> |
| |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="SwirlImage">SwirlImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>SwirlImage() swirls the pixels about the center of the image, where degrees indicates the sweep of the arc through which each pixel is moved. You get a more dramatic effect as the degrees move from 1 to 360.</p> |
| |
| <p>The format of the SwirlImage method is:</p> |
| |
| <pre class="code"> |
| Image *SwirlImage(const Image *image,double degrees, |
| ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>degrees</h5> |
| <p>Define the tightness of the swirling effect.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="TintImage">TintImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>TintImage() applies a color vector to each pixel in the image. The length of the vector is 0 for black and white and at its maximum for the midtones. The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))</p> |
| |
| <p>The format of the TintImage method is:</p> |
| |
| <pre class="code"> |
| Image *TintImage(const Image *image,const char *opacity, |
| const PixelPacket tint,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>opacity</h5> |
| <p>A color value used for tinting.</p> |
| |
| <h5>tint</h5> |
| <p>A color value used for tinting.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="VignetteImage">VignetteImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>VignetteImage() softens the edges of the image in vignette style.</p> |
| |
| <p>The format of the VignetteImage method is:</p> |
| |
| <pre class="code"> |
| Image *VignetteImage(const Image *image,const double radius, |
| const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>radius</h5> |
| <p>the radius of the pixel neighborhood.</p> |
| |
| <h5>sigma</h5> |
| <p>the standard deviation of the Gaussian, in pixels.</p> |
| |
| <h5>x, y</h5> |
| <p>Define the x and y ellipse offset.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
| <h2><a href="http://www.imagemagick.org/api/MagickCore/fx_8c.html" id="WaveImage">WaveImage</a></h2> |
| <div class="doc-section"> |
| |
| <p>WaveImage() creates a "ripple" effect in the image by shifting the pixels vertically along a sine wave whose amplitude and wavelength is specified by the given parameters.</p> |
| |
| <p>The format of the WaveImage method is:</p> |
| |
| <pre class="code"> |
| Image *WaveImage(const Image *image,const double amplitude, |
| const double wave_length,ExceptionInfo *exception) |
| </pre> |
| |
| <p>A description of each parameter follows:</p> |
| |
| <h5>image</h5> |
| <p>the image.</p> |
| |
| <h5>amplitude, wave_length</h5> |
| <p>Define the amplitude and wave length of the sine wave.</p> |
| |
| <h5>exception</h5> |
| <p>return any errors or warnings in this structure.</p> |
| |
| </div> |
|
|
| </div>
|
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